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LiquidPiston, Inc.

Develops rotary engines for military and aerospace vehicles and power generation.

Updated Nov 10, 2026·Latest SEC filing Mar 24, 2026·Suggest an edit

About LiquidPiston

LiquidPiston is a private company based in Bloomfield, Connecticut. It has reported $12,902,731 raised in 14 offerings on Form D since January 2011. Its chief executive is Alexander Shkolnik.

Funding Rounds (SEC Form D)

First saleFiled with SECAmount soldInvestorsAvg. checkTermsFiling
Mar 9, 2026Mar 24, 2026$500,009fully sold1$500KEquityRule 506(c)Form D ↗
Nov 18, 2024Nov 22, 2024$25,010of $230K target1$25,010EquityRule 506(c)Form D ↗
Jun 30, 2023Oct 25, 2023$50,008of $2.3M target1$50,008EquityRule 506(c)Form D ↗
Not yetJun 29, 2021$0of $1.0M target0—EquityRule 506(c)Form D ↗
Feb 21, 2020Mar 3, 2020$126,873of $750K target5$25,375EquityRule 506(c)Form D ↗
Aug 23, 2019Sep 5, 2019$75,000of $500K target2$37,500DebtRule 506(c)Form D ↗
Mar 11, 2019Mar 22, 2019amended Jun 7, 2019$250,000fully sold1$250KDebtRule 506(b)Form D/A ↗1 earlier filing
Jul 28, 2017Dec 18, 2018amended Jan 10, 2019$299,150fully sold43$6,957DebtRule 506(c)Form D/A ↗1 earlier filing
May 24, 2018Dec 12, 2018$200,000fully sold1$200KDebtRule 506(c)Form D ↗
Mar 21, 2016Dec 12, 2018$1,230,000fully sold10$123KDebtRule 506(b)Form D ↗
Feb 10, 2016Dec 11, 2018$251,000fully sold10$25,100DebtRule 506(b)Form D ↗
Feb 13, 2015Feb 26, 2015$1,145,681target not set1$1.1MEquityRule 506(b)Form D ↗
Jun 13, 2013Jun 27, 2013$2,250,000target not set2$1.1MEquity06Form D ↗
Jan 21, 2011Jan 31, 2011amended Dec 15, 2011$6,500,000fully sold6$1.0MEquity06Form D/A ↗1 earlier filing
Total, 14 offerings$12,902,731

First sale is the date the first investor in the offering committed to invest. Companies must file Form D within 15 days of that date, so filing dates run later.

Leadership Team

Executive officers and directors listed on LiquidPiston's Form D filed Mar 24, 2026.

PS
Per Suneby
Executive officer and director
AS
Alexander Shkolnik
President/CEO and director
NS
Nikolay Shkolnik
Executive officer and director
VP
PH
Peter Hartman
Executive officer

Earlier filings also listed Tony Tether (director, last listed Jan 2019), Peter Suneby (director, last listed Jan 2019), William Frezza (director, last listed Feb 2015), Semyon Kogan (director, last listed Feb 2015), James Norrod (executive officer and director, last listed Feb 2015), David Patterson (director, last listed Feb 2015) and David Habiger (director, last listed Feb 2015).

Sources

  1. SECLiquidPiston, Inc. Form D, filed Mar 22, 2019
  2. SECLiquidPiston, Inc. Form D, filed Dec 18, 2018
  3. SECLiquidPiston, Inc. Form D, filed Jan 31, 2011
  4. SECLiquidPiston, Inc. filing history